An improved fast photochemical oxidation of proteins (FPOP) platform for protein therapeutics.

An improved fast photochemical oxidation of proteins (FPOP) platform for protein therapeutics.
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DOI:
10.1007/s13361-014-1055-0
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发表时间:
2015-03
影响因子:
3.2
通讯作者:
Gross ML
Gross ML
中科院分区:
化学3区
文献类型:
--
作者:
Zhang Y;Rempel DL;Zhang H;Gross ML

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Unlike small-molecule drugs, the size and dynamics of protein therapeutics challenge existing methods for assessing their high order structure (HOS). To extend Fast Photochemical Oxidation of Proteins (FPOP) to protein therapeutics, we modified its platform by introducing a mixing step prior to laser irradiation to minimize unwanted H2O2-induced oxidation. This improvement plus standardizing each step, yields improved reproducibility as determined by a fitting process whereby we used a non-FPOP spectrum as a template to report the unmodified level. We also tested different buffer systems for this modified FPOP platform with cytochrome c. The outcome is a standard oxidation profile that can be compared between different laboratories and regulatory agencies who wish to adopt FPOP for quality control of proteins.
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